6 Types of Twins That Are Extremely Rare

Did you know there are more types of twin than just identical or fraternal There are actually 6 types of twins that are extremely rare, and can teach us a lot more about the science of human development. Join Hank Green for a interesting journey into the world of rare twins. SciShow has a spinoff podcast It s called SciShow Tangents. Check it out at Support SciShow by becoming a patron on Patreon: Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Kevin Bealer, KatieMarie Magnone, D. A. Noe, Charles Southerland, Eric Jensen, Christopher R Boucher, Alex Hackman, Matt Curls, Adam Brainard, Scott Satovsky Jr, Sam Buck, Avi Yashchin, Ron Kakar, Chris Peters, Kevin Carpentier, Patrick D. Ashmore, Piya Shedden, Sam Lutfi, charles george, Greg Looking for SciShow elsewhere on the internet Facebook: Twitter: Tumblr: Instagram: Sources: